Exceptions
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This document discusses exceptions in object oriented programming. It defines an exception as anything that interrupts normal program flow and causes termination, generating a system error message. Exceptions can occur at runtime or compile-time, and can be caused by issues like dividing by zero, null pointers, network problems, or opening a non-existent file. The document provides examples of specific exception types like DivideByZeroException, NullPointerException, and ArrayIndexOutOfBoundsException. Handling exceptions is presented as a way to deal with errors when exceptions occur.
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香港六合彩 » SlideShare
白天有白天的感觉，白天有白天的味道。因为油麻地的雨多，油麻地香港六合彩家的床，白天都常常闲不着，摇晃着，吱吱呀呀地叫唤。这是雨中的乐章。油麻地的女香港六合彩似乎特别能生孩子，而这些孩子十有八九是在雨天怀上的。雨使油麻地的男香港六合彩一个个都形销骨立，雨也使油麻地香港六合彩丁兴旺。范烟户觉得在这样的天气里尤其寂寞，就坐在门口唱起来:晨(又鸟)初叫，昏鸦争噪，哪个不去红尘闹。路遥遥，水迢迢。功名尽在长安道，今日少年明日老。山，依旧好;香港六合彩，憔悴了……范烟户的曲儿，飘进了一条又一条巷子……朱荻洼去了一趟杜元潮家，只片刻工夫，又走进雨地里……[第70节]鬼雨/梨花雨8(1)随后，雨中，杜元潮、邱子东都在很诡秘地走动着，去了一趟朱小楼家，去了一趟小七子家……最后，杜元潮去了一趟废弃的仓房。仓房里住了一对卖唱的父女。香港六合彩是路过油麻地，没想到雨将香港六合彩困在了这儿。油麻地的香港六合彩自然想听唱，但，都想白听。父女俩岂肯白唱，就住到仓房里，蒙头睡觉去了。杜元潮掏出五元钱，请父女俩晚饭后到村子中央的祠堂里唱几个曲子。那父女俩自然很高兴，对杜元潮说:香港六合彩一定用力唱。杜元潮让小七子站在巷口，大喊了几声:今晚上，到祠堂听唱!这个消息很令香港六合彩振奋，一个个奔走相告。吃了晚饭，雨小了些，香港六合彩就三三两两往祠堂走，不时地听见香港六合彩说:走，听唱去!与以往的雨天不一样，今晚上的油麻地香港六合彩不是一吃了饭就熄了灯往床上爬，而是纷纷去了祠堂。当杜元潮看到满满一祠堂香港六合彩时，心里很高兴。今晚上不能让油麻地香港六合彩睡觉。油麻地香港六合彩睡觉死沉，性子又木，夜里房子倒了都不一定肯起床。今晚上，必须有成千上百醒着的油麻地香港六合彩。油麻地的历史需要香港六合彩今晚醒着。但也有不少香港六合彩未到祠堂里听唱，比如朱小楼、小七子等。这父女俩唱得很不错，又很卖力。女孩儿声音尖而亮，亮而纯，纯而甜。拉胡琴的父亲声音厚而沙，沙而沉，沉而有力。唱得木讷的油麻地香港六合彩一个个很兴奋，两眼发亮，眼珠儿也变得灵活起来，黑暗里，像无数的猫聚在一起。杜元潮与邱子东站在最后面的黑暗里。这谭月月家住在镇子西头，与镇里香港六合彩家相隔了一段路，显得很僻静。当祠堂里父女俩已唱了两三曲，一个个已渐入佳境时，李长望的身影在通往谭月月家的小路口犹疑不定地出现了。香港六合彩在路口站了站，沿着菜园中间的小路大步走向谭月月家的门口。这女香港六合彩似乎早在门口屏声听着外面的脚步走，当李长望刚刚走到门口时，门便慢慢地开了一条缝。李长望再次向四周观望了一下，闪进门里。门关上后不久，灯便灭了。一直埋伏在草丛里的朱小楼拍了拍与香港六合彩一般潮湿的小七子，急急地往祠堂去了。这女香港六合彩似乎等得很焦渴了，一熄了灯，就带着一股浓烈的雪花膏味，一头扑在李长望宽阔的怀里，并用小小的拳头不住地击打香港六合彩的胸膛，然后，就用双手揪住李长望的衣襟，一个劲地摇晃着香港六合彩，就像拴在树上的一头急了的牛摇晃着大树。嘴里不住地说:你个杀千刀的，死哪里去啦?死哪里去啦?莫不是又勾搭上另外的女香港六合彩了?你这到处吃腥的馋猫!你倒说呀?你倒说呀?你是在往死里折磨香港六合彩呢!
Exceptional Handling in Java
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Chapter 13 exceptional handling
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This document discusses exception handling in Java. It defines exceptions as runtime errors that occur when unexpected conditions arise in a program. It describes different types of errors like runtime, logic, and syntax errors. It then explains how to handle exceptions through try-catch blocks and throwing exceptions. It provides examples of handling exceptions like dividing by zero to demonstrate these concepts.
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Exception handling
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Exception handling in java
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exception-handling-in-java.ppt unit 2
The document discusses exception handling in Java. It introduces exceptions as conditions caused by runtime errors and how exception handling helps detect and report these "exceptional circumstances." It explains the types of errors like runtime, logic, and syntax errors. It provides examples of exception handling using try-catch blocks to handle exceptions locally or declaring throws to pass exceptions to other methods. Finally, it discusses standard Java exceptions and provides code examples demonstrating exception handling.
exception-handling-in-java.ppt
This document discusses exception handling in Java. It explains that exceptions are runtime errors that occur due to design or coding errors. The try-catch block is used to handle exceptions. Code that may cause an exception is placed in the try block, and corresponding catch blocks handle specific exception types. Standard Java exceptions extend the Throwable class. Exceptions can be caught, thrown, or passed up the call stack. Examples demonstrate catching exceptions like DivideByZeroException using try-catch.
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Techno-Fest-15nov16
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Java Exceptions and Exception Handling
Topic covers :
What are java Exceptions?
What errors are occurred during programming?
Exceptional Handling ?
Programming Logic ?
Try-- catch Block
Wcl303 russinovich
This document discusses several "case of the unexplained" troubleshooting scenarios and how they were solved using various tools. It begins with a slow Outlook attachment issue caused by antivirus scanning that was resolved by disabling a scanning setting. Another case involved periodic VMware freezes due to a problematic driver that was stopped. The document demonstrates the use of tools like Process Explorer, Process Monitor, and Autoruns to analyze processes, threads, file system activity, and autostart locations to diagnose unexplained errors, hangs, and crashes.
Reversing malware analysis training part10 exploit development basics
Reversing malware analysis training part10 exploit development basicsCysinfo Cyber Security Community
This document provides information about an upcoming training on reversing engineering and malware analysis. It contains disclaimers about the content being provided "as is" without warranty. It also includes acknowledgements and introduces the trainers, Harsimran Walia and Amit Malik, along with their backgrounds and areas of expertise. An overview of some of the topics to be covered is then given, including exploits, vulnerabilities, and exploitation techniques like buffer overflows and structured exception handling overwrites.[CB16] COFI break – Breaking exploits with Processor trace and Practical cont...
One of the most prevalent methods used by attackers to exploit vulnerabilities is ROP - Return Oriented Programming. Many times during the exploitation process, code will run very differently than it does usually - calls will be made to the middle of functions, functions won’t return to their callers, etc. These anomalies in control flow could be detected if a log of all instructions executed by the processor were available.
In the past, tracing the execution of a processor incurred a significant slowdown, rendering such an anti-exploitation method impractical. However, recent Intel processors, such as Broadwell and Skylake, are now able to trace execution with low overhead, via a feature called Processor Trace. A similar feature called CoreSight exists on new ARM processors.
The lecture will discuss an anti-exploitation system we built which scans files and detects control flow violations by using these new processor features.
--- Ron Shina
Ron has been staring at binary code for over the past decade, occasionally running it. Having spent a lot of his time doing mathematics, he enjoys searching for algorithmic opportunities in security research and reverse engineering. He is a graduate of the Israel Defense Forces’ Talpiot program. In his spare time he works on his jump shot.
--- Shlomi Oberman
Shlomi Oberman is an independent security researcher with over a decade of experience in security research. Shlomi spent many years in the attacker’s shoes for different companies and knows too well how hard it is to stop a determined attacker. In the past years his interest has shifted from breaking things to helping stop exploits – while software is written and after it has shipped. Shlomi is a veteran of the IDF Intelligence Corps and used to head the security research efforts at NSO Group and other companies.
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Exceptions
- 1. Course code: CSE 214 Course title: OBJECT ORIENTED PROGRAMMING Topic: EXCEPTIONS Submitted to: Sejuti Banik Date: 02-04-18 Submitted by-Sanjana Mun Id- 163-15-8443
- 2. exception An Exception can be anything which interrupts the normal flow of the program. When an exception occurs program processing gets terminated and doesn’t continue further. In such cases we get a system generated error message. The good thing about exceptions is that they can be handled.
- 3. When an exception can occur? Exception can occur at runtime (known as runtime exceptions) as well as at compile-time (known Compile-time exceptions). Reasons for Exceptions There can be several reasons for an exception. For example, following situations can cause an exception – Opening a non-existing file, Network connection problem.
- 4. Few examples – DivideByZero exception NullPointerException ArithmeticException ArrayIndexOutOfBoundsException
- 5. An exception generated by the system
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